NEC N8100-1575F, User Manual, Page: 137 / 378

Installing Windows Server 2008 5-9
6.
Enter your product key, and then click [Next].
7.
Select the edition of the Windows operating system that you purchased.
Select [I have selected the edition of Windows that I purchased], and then click [Next].
You will see only possible editions that have been determined by Windows based on the
key you entered in step 6.
NOTE: The Windows versions listed on the screen vary depending
on the Windows Server 2008 DVD-ROM you are using.